George M. Hill & Sons, Inc. (GMH Services) has been proudly serving customers through the Upstate of South Carolina for over 55 years. Our company was incorporated in 1983, and we have grown to an experienced and trusted heating and air-conditioning system provider. Following the footsteps of George Miller Hill, we’re committed to providing prompt service, explained diagnosis, available options and equitable prices. GMH Service works with both commercial and residential customers on projects of all types and sizes. We service all brands and provide outstanding service and installation. We are fully licensed and insured.